Samsung has expanded the Galaxy smartphone line with four new devices launched with affordability in mind.

On Monday, the South Korean tech giant announced the launch of the new handsets, the Galaxy Core II, Galaxy Star 2, Galaxy Ace 4, and Galaxy Young 2. The firm said these models are designed to provide an "exceptional smartphone experience at an affordable price," and each smartphone is equipped with Samsung’s simplified TouchWiz Essence interface and the latest Android 4.4 operating system.

The Samsung Galaxy Star 2.

The Samsung Galaxy Core II sports a leather-like back cover and comes with a 1.2GHz quad-core processor, 768MB RAM and 4GB internal memory. The smartphone comes with a 4.5-inch display and 2,000mAh battery. The dual-SIM handset also is equipped with a 5-megapixel camera with LED flash, and comes in white or black.

The Samsung Galaxy Ace 4, available in LTE or 3G versions, is powered by a 1.0 — 1.2 GHz dual-core processor and is equipped with either a 1500 or 1800mAh battery. The handset has 1GB RAM, 4GB internal memory and room for a microSD card for additional storage, and comes in both charcoal and white colors.

The 3.5-inch Samsung Galaxy Young 2 is a compact smartphone powered by a single-core 1GHz processor and has 512MB RAM, as well as 4GB internal memory and room for a microSD card. The smartphone's 3MP camera is situated on the back of the handset and the device is powered by a 1,300mAh battery. This device is also available in charcoal or white.

Finally, the 3.5-inch Samsung Galaxy Star 2 is powered by a single-core 1GHz processor, 512MB RAM and 4GB storage, and again has room for a microSD up to 32GB. The handset comes with a 2-megapixel camera and is supported by a 1,300mAh battery.

Samsung has not yet revealed the pricing or shipping details of these handsets, but considering the specifications, it is likely the new models are aimed at lower budgets. The mobile handset industry remains competitively fierce and tech giants are not only forced to innovate to stay ahead, but also offer a range of devices suitable for different budgets.